Frequencies for iqi_11_aaa variable in vwhqi_hosp_ahrq dataset :

                          IQI_11_AAA |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
      Better than U.S. National Rate |          1        0.02        0.02
No Different than U.S. National Rate |        621       13.75       13.77
                       Not Available |      3,047       67.44       81.21
           Number of Cases Too Small |        847       18.75       99.96
       Worse than U.S. National Rate |          2        0.04      100.00
-------------------------------------+-----------------------------------
                               Total |      4,518      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016